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In my previous question ntfs-partition-gets-auto-corrupt-becomes-raw-and-unreadable,
I got some answers, but I am still not clear as to how to solve the problem.
To quickly summarize it,

Problem: NTFS partition goes corrupt
OS present: Dual boot (Win8 and Ubuntu 11)
Partition type: Physical, but not bootable, win8 installation and ubuntu hv their separate partitions

So, far
I have a dd backup of the whole partition /dev/sda2 on my other Portable Disk as a file backup.img.

I tried testdisk repair NTFS partition but got this error

Both MFT and MFTMirr are damaged and thus cannot be repaired using TestDisk

NOTE: I even can't get to chkdsk /f for the given corrupt partition because I can't open a command prompt for that location.

Is there a way that I can simply format the drive in Windows and then get the data back from the .img backup???

My topmost priority is to get my data back as it was (same folders and sub-folders, without the hazzle of creating them again), as most of it is my code.

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You can extract the .img file with MagicIso or Unviersal Extractor. That gets you back your data.

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Universal Extractor gives the following error: Extract NT - Extract file in wImage - V 2.10 (c) 1991-96 Gilles Vollant Visit web page : image file : G:\backup-sda2.img this file is not a disk image – Jatin Ganhotra Nov 29 '11 at 19:01
and the link says that Compuserve is shut down. – Jatin Ganhotra Nov 29 '11 at 19:02
Could it be that you have a bad image? i.e. you imaged a bad drive, and therefore its a bad image? – soandos Nov 29 '11 at 19:04
MagicISO unregistered version can only open images upto 300MB, where as mine's size is 150GB, because it's a whole partition. – Jatin Ganhotra Nov 29 '11 at 19:04
Could be so, I have a link to my previous question in the question at the begining, can you have a look there... – Jatin Ganhotra Nov 29 '11 at 19:06

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